ENMA 300
Homework 1
Due: Monday, Sept. 12, 2011
1. Predict the type of bonding that holds the atoms/molecules together in the following solid
materials. Explain why you have made the prediction for each material. Where appropriate
include calculations.
Ca

ENMA 300
Homework 1
Due: Monday, Sept. 11, 2011
Note: You should get in the habit of showing your work even if you can solve a problem in your
head. Reasoning is important and you need to show work to show your reasoning process.
1. Predict the type of bo

ENMA 300/ENME 382
Homework 2 Solutions
Due: Wednesday, Sept. 17, 2014
1. The bond-energy curves for two engineering materials are shown on
the curve to the right. Your task is to select the better material for use in
each application described below. Expl

ENMA 300
Homework 1
Note: You should get in the habit of showing your work even if you can solve a problem in your
head. Reasoning is important and you need to show work to show your reasoning process.
1. Predict the type of bonding that holds the atoms/m

ENMA 300/ENME 382
HW 12
1. Suppose that a wing component on an aircraft is fabricated from an aluminum alloy that has a plane strain
fracture toughness of It has been determined that fracture results at a stress of 365 MPa when the maximum
internal crack

ENMA 300 Fall 2012
Homework 6
Due Oct 23, 2012
8
3
1) Gold has 5.82x 10 vacancies/cm at equilibrium at 300 K. What fraction of the
atomic sites is vacant at 600 K? Gold has a density of 19.302 g/cm3 and an atomic
mass of 196.97 g/mol.
The number of vacanc

10/30/2014
Lesson 19: Mid-Term I
Please sit every other seat, i.e. one space between you and the student next to you.
Place your coat and book bags at the sides of the lecture room.
You are allowed one calculator, one straight edge, pencils or pens, erase

10/8/2014
Lesson 15: POINT DEFECTS
Lesson Objectives:
1. Identify and explain vacancies, interstitial point defects, and substitutional point defects in metals and
alloys
2. Identify and explain point defects in ceramics to include Frenkel and Schottky de

ENMA 300/ENME 382
Homework 12 Solutions
Fall 2014
Engineering Ethics:
1. Go on the web and identify two trustworthy websites to learn more about engineering ethics. For each
website: (1) write the URL; (2) state why you believe it is a trustworthy website